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Pico-solderpen
par Wellkey
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PicoSolderPen is a compact DIY smart soldering pen built around the Raspberry Pi Pico ecosystem (RP2040/RP2350), designed with affordability, repairability, and easy-to-source components in mind. The project focuses on a simple, maker-friendly BOM using widely available parts, making it easier to build, maintain, and improve without relying on hard-to-find components.
Hardware
Qty Component Notes
1 Raspberry Pi Pico RP2040, any variant
1 ST7735S 160×80 TFT display 0.96″ IPS module
1 18650 Li-ion cell
1 5 V 2 A power bank module
1 510-style heater tip
1 510 thread → magnetic adapter for heater mount
1 P-ch MOSFET — FQP27P06 only one MOSFET type needed
1 N-ch MOSFET — IRLZ44N only one MOSFET type needed
1 47–100 Ω resistor MOSFET gate series
3 10 kΩ resistor 1× gate bias, 2× voltage divider
2 Momentary push button NO, to GND
1 AA battery terminals
1 M3x16 Flat head
1 M3x12 Flat head
— Wire, 20AWG for power, smaller for GPIO
More info at:
https://github.com/wellkeyJ/Pic
Hardware
Qty Component Notes
1 Raspberry Pi Pico RP2040, any variant
1 ST7735S 160×80 TFT display 0.96″ IPS module
1 18650 Li-ion cell
1 5 V 2 A power bank module
1 510-style heater tip
1 510 thread → magnetic adapter for heater mount
1 P-ch MOSFET — FQP27P06 only one MOSFET type needed
1 N-ch MOSFET — IRLZ44N only one MOSFET type needed
1 47–100 Ω resistor MOSFET gate series
3 10 kΩ resistor 1× gate bias, 2× voltage divider
2 Momentary push button NO, to GND
1 AA battery terminals
1 M3x16 Flat head
1 M3x12 Flat head
— Wire, 20AWG for power, smaller for GPIO
More info at:
https://github.com/wellkeyJ/Pic
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